Comparison

Open Channel Flow Lite vs Count

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Open Channel Flow Lite

Features
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Introducing Open Channel Flow Lite, the streamlined version of Open Channel Flow Pro! This essential hydraulic engineering calculator brings professional-grade open channel flow calculations to your mobile device. NEW FEATURES: β€’ Manning's equation calculations for 4 channel types β€’ Save up to 3 worksheets and 3 calculations β€’ Professional PDF export capabilities β€’ Intuitive interface designed for engineers β€’ Comprehensive documentation and help CHANNEL TYPES: β€’ Rectangular channels β€’ Trapezoidal channels β€’ Circular pipes β€’ Natural channels CALCULATIONS: β€’ Discharge, water depth, channel width β€’ Bed slope and Manning's roughness β€’ Professional results with visualizations PERFECT FOR: β€’ Civil and hydraulic engineers β€’ Engineering students β€’ Water resource professionals β€’ Environmental consultants

About

Count

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Numerical computation and analysis at your fingertips! Access a multitude of traditional mathematical functions to support the performance of numerical computation workloads, all within a convenient and easy to use touch interface. Start by searching and browsing through a directory of available functions. You can identify commonly used operations as favorites too, for convenient and quick access later. As you work the application will accelerate your workflow by keeping track of your recently executed operations and their corresponding results, which are conveniently available as inputs in subsequent calculations. Features Include: o Adjust display settings for numerical precision and the number of matrix elements shown in the primary output window. o Show a detailed display to view a result in full precision at any time. o Save a result and access its value as an input in another calculation. o Enter β€˜editing mode’ to delete or rearrange results in your current session. o Provide your current session a title and save it to pick up where you left off later.

Screenshots

Open Channel Flow Lite4 screens
Count4 screens

Verdict

The call

The clearest difference is update cadence: Count at monthly against Open Channel Flow Lite's every 25 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Open Channel Flow Lite ships an update every 25 months, Count monthly. The most recent releases landed on September 10, 2026 and May 15, 2026 respectively.

Scorecard1 real difference Β· 5 level
Open Channel Flow Lite versus Count: the parameters behind the verdict, then further details
ParameterOpen Channel Flow LiteCount
PriceFreeFree
Update frequencyEvery 25 monthsMonthly β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS14.0 β€” better15.5
Further details β€” not scored
Size2 MB6 MB
Age rating4+4+
DeveloperAlexius AcademiaKrishan Malhotra

In-app purchases

None

Open Channel Flow Lite

No in-app purchases

None

Count

No in-app purchases

Questions

Is Open Channel Flow Lite free?
Open Channel Flow Lite is free to download, with no in-app purchases.
Is Count free?
Count is free to download, with no in-app purchases.
Do Open Channel Flow Lite or Count have ads?
Neither Open Channel Flow Lite nor Count shows ads.
Which is updated more often, Open Channel Flow Lite or Count?
Open Channel Flow Lite ships an update every 25 months, and Count monthly. Most recently, Open Channel Flow Lite was updated on September 10, 2026 and Count on May 15, 2026.

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